Hi Awesomeo. 6-7mm is pretty small for an adult, and often a size bought for young girls. It seems even the 7-8 mm short strands are soon cast aside as being too small. Of course if that's what your wife likes that's fine but otherwise, I wonder if she'd be happier with more pearl in the less costly freshwaters (small pearls look great in rope length, in my opinion) or maybe a nice pair of earrings, bracelet or pendant?
Pearl Paradise is a huge seller that's having a sale but it ends today. You could ask about a rose gold clasp but I don't think yellow gold would clash, especially when it is such a small amount of gold. Here are a few other ideas if you're not set on the small short akoya strand, but of course I don't know your wife so you should probably just ignore me.
* 54 inch freshwater 6.5-7.0mm, AA+ quality
I have several ropes of this quality and the slight off-roundness is not noticeable unless someone inspects the pearls closely. This makes an impressive gift in my opinion and is versatile- it can be worn doubled, tripled, or tied in a knot.
https://www.pearlparadise.com/colle...freshwater-pearl-necklace?variant=25823457479
This looks sort of like it, 6-6.5mm (I think) white metallics, 48 inch, just to give you some idea of it.
* Or you could get the AAA quality in the 35 inch:
https://www.pearlparadise.com/colle...inch-65-70-mm-white-freshwater-pearl-necklace
* These black pearl studs are a nice size for everyday, and also impressive because hey, they're Tahitians! They're within your budget with the sale. I wear mine constantly.
https://www.pearlparadise.com/colle...cts/80-90-mm-aaa-tahitian-pearl-stud-earrings
* 8.5-9.0mm akoya stud earrings
https://www.pearlparadise.com/colle...akoya-pearl-stud-earrings?variant=24655622087
* Or for $13 over your budget (sale price) you could get 10-10.5mm freshadama earrings (Pearl Paradise's top of the line freshwaters, above AAA)
https://www.pearlparadise.com/colle...ite-freshadama-freshwater-pearl-stud-earrings
* 7.0-7.5 akoya bracelet (to me at least, smaller pearls work better in bracelets than in short strands, but of course so much of it is personal opinion). I believe 7.5 inch is average wrist size:
https://www.pearlparadise.com/colle...hite-akoya-pearl-bracelet?variant=25823894151
Or you could get a double or triple row bracelet in freshwater:
https://www.pearlparadise.com/colle...rl-triple-strand-bracelet?variant=24657684743
The akoyas can have a bit sharper luster but the freshwaters are very nice too.
In any case, good luck and please post us a picture of whatever you get!